a deformational stress

Spectral graph theory has a long history. In the early days, matrix theory and linear algebra were used to analyze adjacency matrices of graphs. Algebraic methods are especially effective in treating graphs which are regular and symmetric.

The furniture is ultra-comf for lounging and watching TV (but maybe not for 190-pound boyfriends), easy to move between rooms or apartments and a spiffy conversation piece.

Thirdly, I continue to attempt to interdigitate the taxa in our flora with taxa of the remainder of the world.